JP2906228B2 - Glucopyranose derivative salt - Google Patents

Abstract

A salt of glucopyranose derivative of the formula (I) <CHEM> wherein R<2> is <CHEM> R<3> is <CHEM> Y<+> is sodium ion or tris(hydroxymethyl)methylammonium ion. Further, a glucopyranose derivative of the formula (II) <CHEM> wherein all the symbols are the same meaning as hereinbefore defined, is an important intermediate for the preparationof compound of the formula (I). The compoud of the formula (I) is prossess enhancing activity of cellular immunity, and therefore be useful for enhancing agent of immunity, prossess inducing activith of TNF, inducing activity of IL-1 and inducing activity of IFN, and therefore be useful for anti-tumor agent. Further, the compound of the formula (II) is intermediate for the preparation of compound of the formula (I), and it can be prepared to advantage on industrially.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to Japanese Patent Application Laid-Open No. 63-179885.
The invention described in the specification. More specifically, Formula (I) having a lipid A-like action

[0002]

Embedded image

(Where R ² is a formula

[0004]

Embedded image

Where R ³ is the formula

[0006]

Embedded image

Wherein Y ⁺ represents a tris (hydroxymethyl) methylammonium ion. The present invention relates to a novel salt of a glucopyranose derivative represented by the following formula:

[0008]

BACKGROUND OF THE INVENTION Gram-negative bacteria such as Vibrio cholerae, Salmonella, and Escherichia coli have a substance called lipopolysaccharide (hereinafter abbreviated as LPS) in the outermost layer of their cell walls, and when this causes endotoxin shock. Have been.

LPS is known to have lethal toxicity, which is the name of the so-called endotoxin, and also exhibit various biological activities. For example, in addition to functions such as a fever action and a bleeding action, an action that activates the host defense mechanism (macrophage activation action, B cell blastogenesis action, nonspecific antibody production action, cell-mediated immune activation action) etc)
And antitumor effects (interferon-inducing effects, TNF
(Tumor necrosis factor) induction action). In particular, the immunostimulation is effective as a non-specific immunizing agent which is not limited to the antigen, and also has an antitumor effect, which has the property of specifically bleeding and necrosis only cancer cells by TNF-inducing effect. As a promising substance.

[0010] The interleukin-1 producing activity or interferon producing activity is useful not only as an immunostimulant but also as an antitumor agent by enhancing natural killer activity. It is known that the active center of LPS is a disaccharide amine called Libid A, and many patent applications have been made for these derivatives.

[0011]

2. Description of the Related Art As a group of compounds for achieving the above object, compounds represented by the general formula (A)

[0012]

Embedded image

Wherein R ^a represents a hydrogen atom, a hydroxyl group or an alkoxy group having 1 to 4 carbon atoms, R ^1a represents a single bond or an oxycarbonylalkyl group having 2 to 20 carbon atoms, and R ^2a and R ^6a Are each independently a hydrogen atom or a general formula

[0014]

Embedded image

(In each formula, R ^10a is a hydrogen atom and has 1 to 1 carbon atoms.
7 represents an alkyl or alkoxy group, or a halogen atom, and m represents 1, 2 or 3. R ^3a represents an alkylene group having 1 to 20 carbon atoms, and R ^4a represents a hydrogen atom or a general formula

[0016]

Embedded image

(In each formula, R ^11a is a hydrogen atom and has 1 to 1 carbon atoms.
7 represents an alkyl or alkoxy group or a halogen atom, and n represents 1, 2 or 3. ), R ^5a represents an oxycarbonylalkyl group having 2 to 20 carbon atoms, and R ^7a represents a hydrogen atom or a hydroxyl group. However, R ^2a , R ^4a and R ^6a do not simultaneously represent a hydrogen atom. ) And salts thereof have been proposed (JP-A-63-179885). In this specification, Example 1 (c) includes a compound represented by the formula (Aa)

[0018]

Embedded image

(Wherein R ² is a formula

[0020]

Embedded image And R ³ is a formula

[0021]

Embedded image Represents 2-deoxy-2-[(3S)
-(9-Phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -4
There is a specific disclosure of -O-sulfo-D-glucopyranose.

Also, Japanese Patent Application Laid-Open No. 63-179885 discloses that a drug represented by the formula (Aa) is produced by the following reaction scheme 1.

[0023]

Embedded image

(In the process formula, R ¹ is a formula

[0025]

Embedded image

Wherein φ represents a phenyl group, TBDMS represents a t-butyldimethylsilyl group, and the other symbols have the same meanings as described above. In addition, the compound represented by the formula 1a is represented by the formula 8a

[0027]

Embedded image

The compound (Agric. Bio) is produced from the compound represented by the formula (commercially available) in 9 steps by a known method (Agric. Bio
l. Chem., 48 (1), 254, (1984)).

[0029]

BACKGROUND OF THE INVENTION Glucopyranose derivatives represented by the formula (Aa) have the drawback that, despite having sufficient pharmacological activity for use as pharmaceuticals, their solubility in injection solvents is extremely poor. Therefore, it was difficult to proceed with development as a pharmaceutical. Further, as shown in Reaction Scheme 1, in the conventional process, the raw material 1
Since β-D-glucopyranoside, which is not common as a sugar, is used for a, nine steps were required to obtain the starting material 1a from the starting material 8a , and thus the production cost was high.

[0030]

Means for Solving the Problems The present inventors have calculated the formula (A)
Research was continued for the purpose of improving the solubility of the glucopyranose derivative shown in a) and reducing the production cost. As a result, it was found that the compound represented by the formula (Aa) was not actually obtained as a free acid, but was obtained as a mixed salt of metals. The metal components are calcium, sodium and magnesium, and the final product has the formula (A)
a) a compound of the formula (B)

[0031]

Embedded image

(Wherein, Z ⁺ represents a mixture of calcium ion, sodium ion and magnesium ion, and the other symbols have the same meanings as described above). It was later confirmed that these metals were derived from impurities in the silica gel for purification. The present inventors have attempted to synthesize various salts in order to improve solubility in a solvent.

As a result, among the salts of the compound represented by the formula (Aa), the tris salt thereof (tris (hydroxymethyl)
Methylamine salt) is a mixed salt represented by the formula (B)
63-179885) and formula (A)
a) significantly higher solubility in the solvent for administration compared to the calcium salt of the compound represented by a),
The present invention has been completed. A specific synthesis example relating to the tris salt of the glucopyranose derivative represented by the formula (I) is disclosed in
It is not described in the specification of 63-179885 and is a novel substance synthesized for the first time. Furthermore, it is not expected at all that this Tris salt has remarkably excellent solubility as compared with other salts, and this is the first finding of the present time.

Further, as a result of repeated studies on an industrially useful production method using α-D-glucopyranoside, which is a common saccharide, as a raw material, the process was shortened by the process shown in the following reaction scheme 2. (Compound (VI) in Reaction Scheme 2 corresponds to compound 6a in Reaction Scheme 1 and thus has been shortened by one step), and it has also been found that the cost is reduced. Was.

[0035]

Embedded image

(In the reaction scheme, R ⁴ represents a protecting group for a hydroxyl group capable of leaving under acidic conditions, such as a t-butyldimethylsilyl group or a trimethylsilyl group, and other symbols have the same meanings as described above.) The starting compound of the reaction scheme 2 represented by the formula (III) is represented by the formula (VII)

[0037]

Embedded image

(Liebigs Ann. Chem., 37 (1986)) can be produced from the compound (commercially available) by a known method (see Liebigs Ann. Chem., 37 (1986)). Can be shortened, leading to cost reduction. The intermediate of formula (II) shown here is disclosed in
It is a completely new compound which is not disclosed in the specification of JP-A-63-179885.

[0039]

The present invention relates to a compound of the formula (I)

[0040]

Embedded image

(Wherein R ² is the formula

[0042]

Embedded image

Where R ³ is the formula

[0044]

Embedded image

And Y ⁺ represents a tris (hydroxymethyl) methylammonium ion. The present invention relates to a novel salt of a glucopyranose derivative represented by the following formula: In addition, the present invention provides a single solvent selected from the group consisting of purified water, ethanol, distilled water for injection, physiological saline, propylene glycol and polyethylene glycol as a solvent, using a salt of the glucopyranose derivative represented by the above formula (I). Alternatively, the present invention relates to a solution dissolved in two or more kinds of mixed solvents, or a mixed solvent of purified water or distilled water for injection and polysorbate 80, preferably a mixed solvent of purified water or distilled water for injection, and ethanol. Wherein the wavy lines represent the α-configuration, β-configuration, or mixtures thereof.

[0046]

[Production Method of the Compound of the Present Invention] The compound of the present invention represented by the formula (I) can be produced, for example, by the following method. 1) subjecting compound (VI) to (i) a sulfation reaction, (ii) optionally performing a salt exchange, and (iii) removing a protecting group for a hydroxyl group,
(iv) a method of performing a salt exchange reaction, 2) a method of performing a salt exchange of a compound of the formula (B) which is a purified mixed salt using an ion exchange resin, or 3) a method of performing a purified mixed salt of the formula (B) A method in which all the compounds of B) are once converted into calcium salts and then subjected to salt exchange with an ion exchange resin.

The method of 1) is described in, for example, the following reaction scheme 3.
It is performed according to.

[0048]

Embedded image

(In the reaction scheme, X ⁺ represents a pyridium ion, a triethylammonium ion, a dimethyl anilium ion or a dimethylaminopyridinium ion, and other symbols have the same meanings as described above.)

To briefly explain each reaction, step (i) is a sulfation reaction, for example, using an inert organic solvent [halogenated hydrocarbon (methylene chloride, chloroform, carbon tetrachloride,
1,1,2,2-tetrachloroethylene, perchloroethylene, chlorobenzene, etc.), ethers (tetrahydrofuran, tetrahydropyran, dioxane, dimethoxyethane, diethyl ether, diisopropyl ether, biphenyl ether, methyl ethyl ether, etc.),
Benzenes (benzene, toluene, xylene, etc.), amines (triethylamine, pyridine, methylpyridine, etc.), ketones (acetone, methyl ethyl ketone, phenylmethyl ketone, etc.), nitriles (acetonitrile, etc.), amides (hexamethylphosphol) Amide, dimethylformamide, dimethylimidazolidinone, etc.), ethyl acetate or a mixed solvent of two or more thereof, etc.] or without using a solvent, to form a tertiary amine (pyridine, triethylamine, dimethylaniline, dimethylaminopyridine, etc.). In the presence, using a sulfurating agent such as a sulfur trioxide-pyridine complex, a sulfur trioxide-trimethylamine complex,
It is performed at a temperature of 70 ° C.

Steps (ii) and (iv) are salt exchange reactions, for example, using an inert organic solvent [halogenated hydrocarbon (same as above), hydrocarbon (pentane, hexane, isooctane, cyclohexane). Etc.), benzene (same as above), ether (same as above), alcohol (methanol, ethanol, isopropanol, etc.), ketone (same as above), nitrile (same as above), ethyl acetate or these Or a mixed solvent of two or more of the above) is treated with an aqueous solution containing tris (hydroxymethyl) methylamine. Alternatively, an ion exchange resin described later may be used.

The step (iii) is a reaction for removing a protecting group of a hydroxyl group. For example, an organic solvent miscible with water [ether (same as above), alcohol (same as above), ketone (same as above) The same as above), nitrile type (the same as above), sulfoxide type (the same as dimethyl sulfoxide), amide type (the same as the above), or a mixed solvent of two or more thereof
In the presence of water, an organic acid (acetic acid, p-toluenesulfonic acid, trichloroacetic acid, oxalic acid, etc.) or an inorganic acid (hydrochloric acid, sulfuric acid, phosphoric acid, hydrobromic acid, etc.) or a mixture thereof, The reaction is performed at a temperature of 0 to 90 ° C.

The obtained compound (I) may optionally include a purification step, for example, a method using recrystallization or reverse phase column chromatography, an ion exchange resin or the like. The compound represented by the formula (VI) is disclosed in JP-A-63-17988.
It can be produced by the method described in the specification of No. 5, or the method described in the above reaction scheme 2.

2) A method of salt-exchanging a mixed salt (mixed salt of calcium, sodium and magnesium) represented by the formula (B) with an ion-exchange resin includes, for example, a neutral cation-exchange resin (—SO ₃ Na type) ) Or an acidic cation exchange resin (—SO ₃ H type or the like) treated with an aqueous solution (tris aqueous solution) containing the corresponding ions, to obtain a mixed salt represented by the formula (B) Compound (VI) can be obtained by (i) sulfation → (ii)
Salt exchange → (iii) also obtained by purification by ordinary silica gel column chromatography).

3) A method of once converting the mixed salt (mixed salt of calcium, sodium, and magnesium) represented by the formula (B) into a calcium salt and performing salt exchange with a cation exchange resin includes, for example, silica gel containing calcium. An aqueous solution (such as an aqueous solution of calcium chloride) is used and treated with an aqueous solution of the formula (B)
(A compound salt obtained by the method described in JP-A-63-179885, or compound (VI) is (i) sulfated → (i
i) salt exchange → (iii) also obtained by purification by ordinary silica gel column chromatography) to obtain a calcium salt, followed by treatment with the cation exchange resin described in 2). . After these operations, purification such as recrystallization and reverse phase column chromatography may be further combined.

Next, each reaction of the reaction scheme 2 will be described.
Step (d) is a reaction for introducing a protecting group (t-butyldimethylsilyl group) into a hydroxyl group, for example, an inert organic solvent [halogenated hydrocarbon (same as above), ether (same as above), Hydrogen (same as above), amine (same as above), sulfoxide (same as above), ketone (same as above), nitrile (same as above), amide (hexamethylphosphoramide, etc.) , Ethyl acetate or a mixed solvent of two or more thereof], a base (pyridine,
Triethylamine, dimethylaniline, dimethylaminopyridine, etc.) using t-butyldimethylsilyl halide at -10 to 60 ° C.

The hydrogenation reaction of step (c) is known,
For example, inert solvents [ether (same as above), alcohol (same as above), benzene (same as above), ketone (same as above), nitrile (same as above), amide (same as above) The same), water, ethyl acetate, acetic acid, or a mixed solvent of two or more thereof] in a hydrogenation catalyst (palladium-carbon, palladium black, palladium, palladium hydroxide, platinum dioxide, nickel, Raney-nickel, etc.). In the presence, an inorganic acid (hydrochloric acid, sulfuric acid, hypochlorous acid, boric acid, tetrafluoroboric acid, etc.) or an organic acid (acetic acid, p-toluenesulfonic acid, oxalic acid, trifluoroacetic acid, formic acid, etc.)
In the presence or absence of a hydrogen atmosphere under a hydrogen atmosphere at normal pressure or under pressure at a temperature of 0 to 200 ° C. When an acid is used, its salt may be used at the same time.

The O-acylation reaction of the step (b) is known, for example, (1) a method using an acid halide, (2) a method using a mixed acid anhydride, (3) dicyclohexylcarbodiimide (DCC), Mukoyama Examples thereof include a method using a condensing agent such as a reagent.

These methods will be specifically described as follows.
Method using an acid halide, a carboxylic acid of the formula HOOC-C ₈ H ₁₆ -φ inert organic solvent [halogenated hydrocarbon (the same), ether (the same as)
Benzene (same as above), amine (same as above),
Ketone (same as above), nitrile (same as above),
Amides (as above), ethyl acetate or their 2
In the above mixed solvents, etc.], a halogenating agent (oxalyl chloride, thionyl chloride, etc.) is reacted at −20 ° C. to reflux temperature, and the resulting acid halide is reacted with a tertiary amine (pyridine, triethylamine, dimethylaniline, dimethylaminopyridine). In the presence of a compound represented by the formula (IV) and an inert organic solvent [halogenated hydrocarbon (same as above), ether (same as above), amine (same as above), ketone ( In the same manner as described above), nitrile (same as above), amide (same as above) or a mixed solvent of two or more thereof] at 0 to 40 ° C.

(2) A method using a mixed acid anhydride is, for example, a method in which a carboxylic acid represented by the formula HOOC-C ₈ H ₁₆ -φ is mixed with an inert organic solvent [halogenated hydrocarbon (the same as described above), ether (Same as above),
Benzene (same as above), amine (same as above),
Ketone (same as above), nitrile (same as above),
Amides (as above), ethyl acetate or their 2
In the presence of a tertiary amine (same as above), an acid halide (pivaloyl chloride, tosyl chloride, mesyl chloride, etc.) or an acid derivative (ethyl chloroformate, isobutyl chloroformate, etc.) The reaction is carried out at ４０40 ° C., and the compound of the formula (IV) is further added thereto and reacted at the same temperature.

(3) A method using a condensing agent such as DCC or Mukaiyama's reagent can be performed, for example, by reacting a carboxylic acid represented by the formula HOOC-C ₈ H ₁₆ -φ with a compound represented by the formula (IV) in an inert organic solvent [ Halogenated hydrocarbons (same as above), ethers (same as above), benzenes (same as above),
Amine-based (same as above), ketone-based (same as above), nitrile-based (same as above), amide-based (same as above), ethyl acetate, or a mixed solvent of two or more thereof] (In the presence or absence of (as above)) a condensing agent [DCC, Mukaiyama reagent (2-chloro-1-methylpyridinium iodide, 2-iodo-1-methylpyridinium iodide, etc.), N, N, N ', N'-tetramethylchloroformamidinium chloride, 1,3-dimethyl-
2-chloroimidazolinium chloride, etc.]] at 0 to 40 ° C.

The N-acylation reaction of the step (a) is known, for example, (1) a method using a mixed acid anhydride, (2) DC
C, a method using a condensing agent such as Mukaiyama reagent, and the like.
These methods are performed by the same operation as the method described in the aforementioned O-acylation reaction. Each reaction is performed in an inert gas (argon, nitrogen, etc.) atmosphere as necessary.

The product of each reaction may be isolated, washed, dried and purified for each step and subjected to the next reaction, or the operation may not be performed at all or may be stopped at an appropriate stage. May proceed to the next step. The reaction product in each reaction may be purified by conventional purification means such as distillation under normal pressure or reduced pressure, high performance liquid chromatography using silica gel or magnesium silicate, thin layer chromatography, column chromatography and ion exchange resin, reverse phase. It can be purified by a method such as chromatography, washing, and recrystallization.

[0064]

The salt of the glucopyranose derivative represented by the formula (I) according to the present invention exhibits pharmacological activity equivalent to that of the mixed salt represented by the formula (B), and moreover, a solvent used when administered as a pharmaceutical. Specifically, purified water, ethanol, distilled water for injection, physiological saline, a single solvent or a mixture of two or more solvents selected from the group consisting of propylene glycol and polyethylene glycol, or purified water or distilled water for injection and polysorbate 80 Significantly improves the solubility in a mixed solvent consisting of As an example, Table 1 shows the solubility in a mixed solvent of water-ethanol (1: 1) which is considered to be a dissolving agent at the time of actual administration.

[0065]

Table 1: Soluble (25 ° C) compounds Solubility (mg / ml) Tris salt of the present invention (Example 1)> 270 Mixed salt (formula (B)) 1.5 (Example of JP-A-63-179885 ) 1 (c))

As shown in Table 1, the solubility of the compound of the present invention is at least 180 times higher than that of the mixed salt represented by the formula (B). Further, in producing a compound represented by the formula (I) useful as a pharmaceutical, the production method using the compound represented by the formula (II) as an intermediate is an industrial production method superior to the conventional method in the following points. Is the way.

I) α-Glucopyranoside represented by the formula (III) can be used as a raw material, and the number of steps can be greatly reduced. ii) The compounds represented by the formulas (III) and (IV)
Purification is possible by recrystallization, and the industrially disadvantageous purification step by column chromatography can be reduced. iii) In the process from the compound represented by the formula (V) to the compound represented by the formula (II), the benzylidene group and the benzyl group, which are protective groups, can be removed at a time, so that the number of conventional steps can be reduced by one step. .

[0068]

[Application to Pharmaceuticals] When the compound of the present invention represented by the general formula (I) is used for treatment of immunodeficiency or tumor, it is usually administered systemically or locally in oral or parenteral form. The dose varies depending on age, body weight, symptoms, therapeutic effect, administration method, treatment time, and the like. Usually, per adult,
It is orally administered once to several times a day in the range of 5 mg to 5,000 mg per dose, or parenteral once to several times a day in the range of 500 μg to 500 mg at a time per adult. (Preferably iv).

As described above, since the dose varies depending on various conditions, a dose smaller than the above-mentioned dose may be sufficient in some cases, or an administration beyond the range may be required. Solid compositions for oral administration include tablets, pills, capsules, powders, granules and the like.

In such a solid composition, the one or more active substances comprise at least one inert diluent, such as lactose, mannitol, glucose, hydroxypropylcellulose, microcrystalline cellulose, starch, polyvinylpyrrolidone, It is mixed with magnesium metasilicate aluminate. The composition may contain, in a conventional manner, additives other than an inert diluent, for example, a lubricant such as magnesium stearate, a disintegrant such as calcium cellulose glycolate, a stabilizer such as lactose, glutamic acid or asparagine. A solubilizing agent such as an acid may be contained. Tablets or pills may be coated with a film of a gastric or enteric substance such as sucrose, gelatin, hydroxypropylcellulose, hydroxypropylmethylcellulose phthalate, or two or more layers, if necessary. Also included are capsules of absorbable materials such as gelatin.

Liquid compositions for oral administration include pharmaceutically acceptable solutions, emulsions, syrups, elixirs and the like, and generally used inert diluents (purified water, ethanol, etc.). ) May be included. The composition may contain, in addition to the inert diluent, adjuvants such as wetting agents and suspending agents, sweetening agents, flavoring agents, fragrances, and preservatives.
Other compositions for oral administration include sprays which contain one or more active substances and are formulated in a manner known per se.

Injections for parenteral administration according to the present invention include sterile aqueous or non-aqueous solutions, suspensions, and emulsions. Aqueous solutions and suspensions include, for example, distilled water for injection and physiological saline. Examples of the water-insoluble solutions and suspensions include propylene glycol, polyethylene glycol, olive oil, ethanol, polysorbate 80 and the like. Such compositions may also contain adjuvants such as preservatives, wetting agents, emulsifying agents, dispersing agents, stabilizers (eg, lactose), solubilizing agents (eg, amino acids such as arginine, glutamic acid, aspartic acid). May be included. These are sterilized by, for example, filtration through a bacteria retaining filter, blending of a bactericide or irradiation. They can also be used in the production of a sterile solid composition, for example, dissolved in sterile water or a sterile solvent for injection before use of the freeze-dried product.

Other compositions for parenteral administration include topical solutions, ointments, salves, suppositories, pessaries, etc., containing one or more active substances and formulated in a conventional manner.

[0074]

EXAMPLES The present invention will be described in detail below with reference examples and examples, but the present invention is not limited to these examples.
The solvent in parentheses shown at the point of separation by chromatography indicates the elution solvent or developing solvent used, and the ratio indicates the volume ratio. Unless otherwise noted,
NMR is measured in deuterated chloroform (CDCl ₃ ) solution. The symbols in the chemical formulas have the same meaning as described above.

Reference Example 1 Synthesis of benzyl 2-((3S) -hydroxytetradecanoyl) amino-4,6-O-benzylidene-2-deoxy-α-D-glucopyranoside

[0076]

Embedded image

Under an argon atmosphere, (3S) -hydroxymyristic acid (50 g) was added to tetrahydrofuran (TH
F) (500 ml). Triethylamine (29.3 ml) was added thereto, and pivaloyl chloride (19.5 ml) was gradually added while maintaining the temperature at 10 ° C. or lower. The mixture was stirred at the same temperature for 30 minutes and benzyl 2-amino-
A solution of 4,6-O-benzylidene-2-deoxy-α-D-glucopyranoside (50 g) dissolved in a mixture of THF (500 ml) and hexamethylphosphoramide (40 ml) was maintained at a temperature of 20 ° C. or lower. While adding at once. The reaction solution was stirred at room temperature for 4 hours, and the formed solid was removed by filtration. The filtrate was concentrated under reduced pressure, and the obtained residue was dissolved in acetonitrile (800 ml) and purified by recrystallization to give the title compound (78.1) having the following physical data.
g) was obtained. 95% yield.

Melting point: 168-169 ° C .; TLC: Rf 0.5 (methylene chloride: methanol = 10:
1); NMR: δ 7.25 (m, 2H), 7.20 (m, 8H), 6.20 (d, 1H), 5.
3 (s, 1H), 4.95 (d, 1H), 4.75 (d, 1H), 4.5 (d, 1H), 4.15 (m,
2H), 3.75 (m, 5H), 3.2 (br, 1H), 3.1 (br, 1H), 2.3 (m, 2H),
0.9 (t, 3H).

Reference Example 2 Benzyl 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -4,6-O-benzylidene-2-
Synthesis of deoxy-α-D-glucopyranoside

[0080]

Embedded image

Under an argon atmosphere, the compound prepared in Reference Example 1 (78.1 g) and 9-phenylnonanoic acid (68.5 g)
Was dissolved in methylene chloride (700 ml). To this solution was added 2-chloro-1-methylpyridinium iodide (85.0
g), dimethylaminopyridine (16.2 g) and triethylamine (83.3 ml) were sequentially added at 10 ° C., followed by stirring at room temperature overnight. After completion of the reaction, methanol (3 ml) was added, the mixture was stirred for 20 minutes, and then concentrated under reduced pressure. The residue was dissolved in ethyl acetate (500 ml), washed with water, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was dissolved in isopropanol (700 ml) and purified by recrystallization to give the title compound (72.5 g) having the following physical data. 55% yield.

Melting point: 74-75 ° C .; TLC: Rf 0.59 (hexane: ethyl acetate = 3:
1); NMR: δ 7.4 to 7.0 (m, 20H), 6.1 (d, 1H), 5.5 (s, 1H),
5.35 (t, 1H), 5.15 (br, 1H), 4.95 (d, 1H), 4.75 (d, 1H),
4.5 (d, 1H), 4.3 (m, 2H), 3.8 (m, 3H), 2.6 (m, 4H), 2.3 (m,
6H), 0.9 (t, 3H).

Reference Example 2 (a) Benzyl 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -4,6-O-benzylidene -2-
Synthesis of deoxy-α-D-glucopyranoside

[0084]

Embedded image

Under an argon atmosphere, N, N, N ', N'-
Tetramethylurea (1394mg) in methylene chloride (4m
l) Add oxalyl chloride (0.52 ml) to the solution,
After stirring at 65 ° C. for 2 hours, the temperature was returned to room temperature. To this solution, 9-phenylnonanoic acid (515 mg) was added, and further, pyridine (1.6 ml), acetonitrile (20 ml) and the compound prepared in Reference Example 1 (583 mg) were added.
The reaction was stirred overnight at room temperature. After completion of the reaction, the reaction solution was concentrated under reduced pressure, the residue was dissolved in ethyl acetate, washed sequentially with water and an aqueous solution of sodium hydrogen carbonate, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane: chloroform = 1: 2) to give the title compound (660 mg) having the following physical data.
I got Yield 65.0%. TLC: Rf 0.78 (methylene chloride: ethanol = 5
0: 1).

Reference Example 2 (b) Benzyl 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -4,6-O-benzylidene -2-
Synthesis of deoxy-α-D-glucopyranoside

[0087]

Embedded image

Under an argon atmosphere, the compound prepared in Reference Example 1 (1.89 g), 9-phenylnonanoic acid (1.60 g) and 1,3-dimethyl-2-chloroimidazolinium chloride (1.65 g) were treated with methylene chloride (1.65 g). 15 ml). Pyridine (1.54 ml) was added dropwise to this solution at room temperature over 5 minutes. The reaction was stirred overnight at room temperature. After completion of the reaction, hexane was added, and the mixture was washed with an aqueous solution of sodium hydrogen carbonate, water and an aqueous solution of copper sulfate, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography (methylene chloride: ethyl acetate = 20:
Purified in 1) to give the title compound (2.72
g) was obtained. 82.4% yield. TLC: Rf 0.84 (methylene chloride: ethanol = 5
0: 1).

Reference Example 3 Synthesis of 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -2-deoxy-D-glucopyranoside

[0090]

Embedded image

Reference Example 2, Compound (20.3 g) produced in 2 (a) or 2 (b), sodium tetrafluoroborate (9.88 g), aqueous solution of tetrafluoroboric acid (42%,
2.8 ml), a mixture of palladium-carbon (6 g) and dimethoxyethane (100 ml) were reacted in a hydrogen stream at normal pressure and room temperature for 15 hours. After completion of the reaction, the catalyst was removed by filtration. The catalyst was washed with ethyl acetate, combined with the filtrate, and an aqueous sodium hydrogen carbonate solution (0.75 M, 50 ml) was gradually added. Ethyl acetate (100 ml) was added to the mixture, and the mixture was separated. The organic layer was dried over magnesium sulfate and concentrated under reduced pressure to obtain a crude product of the title compound (1.61 g).

Reference Example 3 (a) 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -2-deoxy-D-glucopyranoside Synthesis

[0093]

Embedded image

The compound prepared in Reference Example 2 (623.7 g) was dissolved in dioxane (1.8 L), and sodium tetrafluoroborate (301.4 g), an aqueous solution of tetrafluoroboric acid (42%, 87 ml) and palladium-carbon ( 187 g) was added. The mixture was reacted in a hydrogen stream at normal pressure and room temperature overnight. After the reaction, an aqueous solution of sodium hydrogen carbonate (2 M, 600 ml) was added and the mixture was stirred. The reaction solution was filtered over celite, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (chloroform: methanol = 30: 1) to give the title compound (349 g) having the following physical data. Yield 66.5%.

TLC: Rf 0.28 (methylene chloride: ethanol = 20: 1); NMR (CDCl ₃ + CD ₃ OD): δ 7.25 to 7.0 (m, 10
H), 6.5 (d, 1H), 5.1 (m, 3H), 4.0-3.3 (m, 7H), 2.5 (t, 4
H), 2.3 (m, 6H), 0.8 (t, 3H).

Reference Example 4 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -6-O-t-butyldimethylsilyl-2 -Synthesis of deoxy-D-glucopyranose

[0097]

Embedded image

Reference Example 3 or 3 under an argon atmosphere
The compound (274.2 g) prepared in (a) was dissolved in pyridine (1.6 liter). To the reaction solution were added t-butyldimethylsilyl chloride (59.1 g) and dimethylaminopyridine (16 g), and reacted at room temperature for 3 hours. After completion of the reaction, methanol (40 ml) was added, and the mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (chloroform: methanol = 50: 1) to give the title compound (307 g) having the following physical data. 98.5% yield.

TLC: Rf 0.51 (methylene chloride: ethanol = 20: 1); NMR: δ 7.25 to 7.0 (m, 10H), 6.1 (d, 1H), 5.1 (m, 3)
H), 2.6 (t, 4H), 2.3 (m, 6H), 0.9 (m, 12H), 0.1 (s, 6H).

Reference Example 5 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -4-O-sulfo-6-O-t Of -butyldimethylsilyl-2-deoxy-D-glucopyranose sodium salt

[0101]

Embedded image

Under an argon atmosphere, the compound prepared in Reference Example 4 (265.2 g) was dissolved in pyridine (1.4 L). To this solution was added sulfur trioxide-pyridine complex (75.3 g) at room temperature, and the mixture was stirred for 1 hour. After completion of the reaction, ethanol (150 ml) was added, and the mixture was stirred for 30 minutes. The reaction solution was concentrated under reduced pressure, and the obtained residue was dissolved in ethyl acetate (3 L). The solution was subjected to salt exchange with a 5% aqueous sodium acetate solution, and concentrated under reduced pressure to give the title compound having the following physical data. TLC: Rf 0.05 (methylene chloride: ethanol = 2
0: 1).

Reference Example 5 (a) 2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9-phenylnonanoyl) -4-O-sulfo-6 Synthesis of Ot-butyldimethylsilyl-2-deoxy-D-glucopyranose sodium salt

[0104]

Embedded image

The compound prepared in Reference Example 4 (500 mg) was dissolved in pyridine (6 ml) under an argon atmosphere.
To this solution was added a sulfur trioxide-trimethylamine complex (3
30 mg) and stirred at 50 ° C. for 2 hours. After completion of the reaction, ethanol (0.4 ml) was added to the reaction solution, and the mixture was stirred for 10 minutes. After the completion of the reaction, the solution was concentrated under reduced pressure, the residue was dissolved in ethyl acetate, and subjected to salt exchange twice with an aqueous sodium acetate solution. The organic layer was concentrated under reduced pressure to give the title compound (crude product, 184 mg) having the following physical data. TLC: Rf 0.08 (methylene chloride: ethanol = 2
0: 1).

Reference Example 6 2-deoxy-2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9
Synthesis of calcium-sodium-magnesium mixed salt of -phenylnonanoyl) -4-O-sulfo-D-glucopyranose

[0107]

Embedded image

The compound (1042 g) produced in Reference Example 5 was dissolved in ethanol (3 L), and acetic acid (3 L) was dissolved.
And water (1 liter) were added and stirred at room temperature for 18 hours. After completion of the reaction, the reaction solution was concentrated under reduced pressure. The solution was neutralized by adding a saturated aqueous solution of sodium bicarbonate, and extracted with chloroform-methanol (1: 1) (14 L). The extract was dried over magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography (first time ethyl acetate: methanol: water = 100: 10: 1,
Second time: chloroform: methanol: water = 100: 1
0: 0.5 → 100: 20: 1) to give the title mixed salt (568 g) having the following physical data. TLC: Rf 0.21 (ethyl acetate: methanol: water = 1
00: 10: 1).

Reference Example 7 2-deoxy-2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9
Synthesis of -Phenylnonanoyl) -4-O-sulfo-D-glucopyranose calcium salt

[0110]

Embedded image

Silica gel (2 kg) was stirred with a 15% aqueous solution of calcium chloride (10 liters) at room temperature for 3.5 hours.
Washed with water. This gel was mixed with a 10% aqueous calcium chloride solution (1
(5 liters) at room temperature overnight and washed with water. This gel is further treated with a 10% calcium chloride aqueous solution (15 liters).
After stirring at room temperature for 8 hours, the mixture was washed with water. This gel was packed in a column, a 10% aqueous solution of calcium chloride (15 liters) was poured, and the column was washed sequentially with water, ethanol and hexane. The gel was centrifuged, air-dried for one day, dried at 105 ° C. for 42 hours, and then dried over phosphorus pentoxide for 4 hours.

The mixed salt (0.7 g) produced in Reference Example 6 was placed on a column packed with the above gel (140 ml), and a mixed solution of chloroform-methanol (30: 1 → 20: 1) was added.
→ 10: 1). The eluate was concentrated, and the obtained residue was suspended in a mixture of ethanol and water (4 ml: 30 ml), freeze-dried, and further dried over phosphorus pentoxide to obtain the title compound (0.58 g).

Example 1 2-deoxy-2-[(3S)-(9-phenylnonanoyloxy) tetradecanoyl] amino-3-O- (9
Synthesis of -phenylnonanoyl) -4-O-sulfo-D-glucopyranose tris (hydroxymethyl) methylammonium salt

[0114]

Embedded image

Cation exchange resin (-SO ₃ H type) 100
The mixture was washed with water and ethanol, and a 10% aqueous solution of tris (hydroxymethyl) aminomethane (500 ml) was passed. Washed with water until neutral and replaced with methanol. The calcium salt (1.1 g) produced in Reference Example 7 was placed on a column and eluted with methanol. The eluate was concentrated under reduced pressure, the residue was subjected to the above operation again, the obtained residue was dissolved in ethanol (4 ml), water (20 ml) was added, and the mixture was lyophilized to give the title compound having the following physical data. (1.11 g) was obtained.

FAB-Mass: 1160 (M + Tris
H) ⁺ ; IR (KBr): ν 3361, 2927, 2854, 1734, 1656,
1542, 1497, 1467, 1256, 1126, 1054, 995, 821, 748,
698, 602 cm ^-1 ; NMR (CDCl ₃ + CD ₃ OD solution): δ 7.35-7.1
(m, 10H), 5.3 (dd, 1H), 5.1 (m, 2H), 4.4 (t, 1H), 4.1 (dd, 1
H), 3.7 (s, 6H), 2.6 (t, 4H), 2.35 (m, 6H), 0.9 (t, 3H).

Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) C07H 13/04 CAPLUS (STN) REGISTRY (STN)

Claims (5)

(57) [Claims] 1. A compound of the formula (I) (Wherein R ² is of the formula: Wherein R ³ is a group represented by the formula: And Y ⁺ represents a tris (hydroxymethyl) methylammonium ion. A) a salt of a glucopyranose derivative represented by the formula: 2. The solvent is a single solvent selected from the group consisting of purified water, ethanol, distilled water for injection, physiological saline, propylene glycol and polyethylene glycol, or a mixed solvent of two or more thereof, or purified water or distilled water for injection. The solution of a salt of a glucopyranose derivative according to claim 1, which is a mixed solvent consisting of water and polysorbate 80. 3. The solution according to claim 2, wherein the solvent is a mixed solvent consisting of purified water or distilled water for injection, and ethanol. 4. The solvent is a mixed solvent composed of purified water or distilled water for injection, and ethanol (1: 1), and the concentration of a solution of a salt of a glucopyranose derivative is 270 mg /
The solution according to claim 2 or 3, wherein the solution is not more than ml. 5. The solvent is a mixed solvent of purified water or distilled water for injection and ethanol (1: 1), and the concentration of the solution of the salt of the glucopyranose derivative is 1.5 mg / m 2.
The solution according to claim 2, wherein the amount is more than 1 and not more than 270 mg / ml.